Lock and latch



(No Model.)

J'. W. KOONS; LOCK AND LATCH.

No. 475,121. Patented May 17, 1892.

un/human UNITED STATES PATENT OF ICE,

JOHN T. KOONS, OF LEHIGHTON, PENNSYLVANIA.

' LOCK AND LATCH.

SPECIFICATION forming part of Letters Patent No. 475,121, dated May 1'7,1892. Application filed January 14, 1892. Serial No. 418,085. (Nomodel.)

To all whom it may concern.-

Be it known that I, JOHN W. KooNs, a citizen of the United States ofAmerica, residing at Lehighton, in the county of Carbon and State ofPennsylvania, have invented certain new and useful Improvements in Locksand Latches; and I do hereby declare the following to be a full, clear,and exact description of the invention, such as will enable othersskilled in the art to which it appertains to make and use the same,reference being had to the accompanying drawings, and to the letters ofreference marked thereon, which form a part of this specification.

This invention relates to improvements in combined locks and latches;and the invention consists in the construction, combination, andorganization of parts,whereby a combined lock and latch can be soconstructed that it may be used for a right and left hand door and as amortise-lock.

In the accompanying drawings, forming part of this specification, Figure1 is a perspective view of a combined lock and latch constructed inaccordance with my invention. Fig 2 is a plan view with thecoveringplate removed. Fig. 3 is a detail perspective view showing thethumb-latch for operating the knob-spindle and the knob of the latchcarried by the same escutcheon. Fig. 4 is a detail perspective view ofthe latch-spindle and parts, showing the connection thereof. Fig. 5 is aside elevation of Fig. 4:. Fig. 6 is a detail view, partly in section.

A designates the lock-casing, which may be of ordinary construction,with an opening through which the latch B passes, said latch beingconnected to the lock-casing by the stud b. This latch is formed in thesegment of a circle and is connected to one end of an anglearm, at theangle of which is an aperture to receive the stud b. The ends of thelatch are beveled, as shown,so that when it is reversed on the arm B itmay be arranged to lock either a right or left hand door, the changebeing accomplished by turning the latch proper upon the pin which passesthrough the same and is carried by the arm and then locking the partstogether by inserting the pin 1). The angle arm is extended beyond thepivot to bear against a spring C, so as to normally project the latchbeyond the casing. The member 13 of the angle-arm extends toward theknob-spindle D, and the upper edge thereof is curved to conform to theshape of the spring, and when the latch is forced within thecasing theend of this arm will bear against and bend the spring, so as to give thelatch a powerful throw when it is released.

The knob-spindle D carries within the lockcasing a sleeve D, having alug d, which when the latch is unlocked or free to move may be caused toengage with the member B of the arm carrying the latch to'elevate thesame and move the latch within the casing. A lug e is provided to limitthe movement of the lug formed on the spindle, said lug e bein gapertured to receive the screw which holds the face-plate of the lock tothe other part of the casing.

f designates a projection formed on the casing, which terminatesin astud or pin f, upon which is pivotally mounted a pawl F, having aweighted end. This pawl is adapted to engage or enter a notch f in theunder side of the latch B, so as to hold said latch against movement. 7

G designates a knob, which carries a spindle g, having a notched orrecessed end and a projecting lug g. The flange G at the base of a theknob has a notch 9 with which a weighted pawl G carriedby thelock-casing, is adapted to engage to hold theknob against movement whendesired. Between the faceplates of the lock-casin g, so that the endswill lie in thevcircular apertures therein, is a sleeve H, into whichthe spindle g, carried by the knob G, passes, the lug g on said spindlelying in a slot h, said slot being intersected by a recess h into whichis passed a locking-key k which holds the spindle and sleeve in movableconnection. On one side of the sleeve is formed a locking-dog I, havinga cam or curved faced and a straightfacee", said straight face beingadapted to bear against the inner end of the latch and is held in suchengagement to lock the latch projected by a pawl K, pivoted on a stud 7cand provided with a weighted end, which operates the pawl F to releasethe same. The end of the spindle g may be of any desired configurationto receive a key M, which may be passed through a suitable escutcheon toengage the spindle and turn the same. The end of the key M can be variedas well as the spindle.

In Fig. 3 of the drawings I have shown the spindle D provided with alever or thumblatch, and when such is used it is evident that it can beturned down and held while the fingers are employed to turn the knob G.

When it is desired to fasten thelock so that it cannot be manipulated onthe outside'of the door, the knob G is turned so as to bring the notch gin contact with the pawl, and when the pawl is in such engagement itwill securely hold the locking dog I against movement and it will beimpossible to throw the bolt of the look even with a key. Thelocking-dog I, when in engagement with the end of the latch-rests upon alug-n.

In operation, when it is desired to release the latch firorn theinnerside of the door the knob G is grasped and. turned, which firstcauses the lug g on thespindle gv to engage with the u-p-- per end ofthe pawl'K, so as to throw it out of engagement with the shouldere' atthe-end of the cam or locking-dog, after which said looking-dog isturned so that the cam-face thereof will bear against the upper end ofthe pawl. K to operate it to release the pawl F from the latch, sothattheangle-arm B canbe operated by the spindle I), to retract thebolt. Itwill be noted that the locking-dog can be placed toremain in theposition show-n i1 1d ot-. ted lines, Fig. 2, and rest against thelug n,and when placed in such position thebolt can be thrown by turning theknob-spindle without operating the knob Gr.

With this lock avarietyv of escutcheons may be used, which may be ofdiiferent forms or shapes, and the lock can be furnished indifent s y eHaving thus described my inventiomwhat I claim asnew, and desire tosecure by Letters Patent, is

1. In a combined lock and latch, a curved latch-bar having beveledendsand reversibly secured to an arm B, having an. extended portion Btogether with a spindle. carrying a sleeve havinga lug which is adaptedtooperate said arm, and a spring adapted to throw the arm in onedirection, substantially as shown, and for the purpose set forth.

pawl adapted to engage with the latch, a lock- I ing-dog mounted on aspindle g, having alug g, and a pawl K, adapted tobe actuated by saidlug and the cam-face of the locking-dog,

so as to operate the pawl F to release the latch, substantially asshown, and for the purpose set forth.

3. In combination with a movable latchbar B, a spindle g, having a lugg, a sleeve H, located within the casing, upon which is mounted alocking-dog, said sleeve having a {slot h and an intersecting slot hffor the reception of a key It for retaining the spindle and locking-dogin connection with each other, a pawl K, and a pawl F, said latter pawlbeing adapted to enter a. notch in the latch-bar, substantially asshown, andfor the purpose set forth.

4:. In combination with a lock constructed substantially as shown andprovided with a swinging latch-bar, andalocking-dogl, adapted to beheldand locked in con-tact with one end of a latch-bar, said locking-doghaving a I sleeve, through which passes a spindle-having a lug forreleasing the locking means and turning the locking-dog, so that saidlocking means will be. turned upon its pivot to operiate the weightedpawl F to release the latch- ;bar, substantially as shown.

5. In combination with a lock constructed substantially as shown andprovided with a knob-spindle carrying a sleeve having a lugfor'retracting the locking-bolt, and a knob G, carrying a spindle whichactuates. a locking- '1 dog to releaselocking-pawls, the knob having aflange witha notch g -,-in which apawl G is adapted to enter-to hold thelocking-dog in. a

fixed position: against the locking-bolt, for-the.

' purpose set forth.

In testimony whereof I affixmy signature in lj presence of twowitnesses. JOHN W. KOON S.

WVitnesses:

JoHN SEABoLD'r,

H. SEABOLDT.

